Mail handler is a term that is used to describe an individual who is responsible for sorting, processing, and distributing mail. Though there are no direct synonyms for the exact term, there are several terms that can be used to describe individuals who perform similar tasks. Some of the common synonyms or alternative terms for mail handler include postal worker, postman, mail carrier, postal clerk, and mail sorter. The specific title and job responsibilities may vary depending on the job context and the organization. However, all these synonyms have a common theme of managing and handling mail within a postal or mail delivery service setting.